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Table 2 Monthly Summary of Tarmac Times Oct 2008 - Nov 2009
Table 2 Monthly Summary of Tarmac Times Oct 2008 - Nov 2009
Number and Percent of Flights with Tarmac Times of 3 Hours or
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For an explanation of the new reports, see
New Tarmac Time Data Q&A
| Number
of Regularly Scheduled Flights |
Tarmac Times of 3 Hours or Longer | Stage of Operation of the 3-Hour Tarmac Time | ||||||
|---|---|---|---|---|---|---|---|---|
| Total | Percent | Prior to Cancellation | Multiple Gate Departure | Taxi-Out | Taxi-In | At Diversion Airport |
||
| Oct 2008 | 556,205 | 49 | 0.01 | 2 | 6 | 35 | 0 | 6 |
| Nov 2008 | 523,272 | 7 | 0.00 | 0 | 1 | 4 | 0 | 2 |
| Dec 2008 | 544,956 | 187 | 0.03 | 40 | 14 | 116 | 7 | 10 |
| Jan 2009* | 532,339 | 87 | 0.02 | 7 | 10 | 70 | 0 | 0 |
| Feb 2009 | 488,410 | 43 | 0.01 | 5 | 4 | 34 | 0 | 0 |
| Mar 2009 | 557,422 | 88 | 0.02 | 6 | 9 | 66 | 0 | 7 |
| Apr 2009 | 537,793 | 81 | 0.02 | 12 | 10 | 47 | 0 | 12 |
| May 2009 | 546,832 | 35 | 0.01 | 7 | 2 | 25 | 1 | 0 |
| June 2009 | 557,594 | 278 | 0.05 | 40 | 42 | 172 | 1 | 23 |
| July 2009 | 580,134 | 164 | 0.03 | 21 | 20 | 105 | 0 | 18 |
| Aug 2009 | 568,301 | 70 | 0.01 | 7 | 11 | 45 | 0 | 7 |
| Sep 2009 | 510,852 | 6 | 0.00 | 0 | 0 | 4 | 0 | 2 |
| Oct 2009 | 531,799 | 12 | 0.00 | 0 | 0 | 12 | 0 | 0 |
| Nov 2009 | 509,540 | 4 | 0.00 | 0 | 1 | 2 | 0 | 1 |
Source: Bureau of Transportation Statistics
* Includes one flight with two separate three-hour tarmac times. Northwest Flight 1491 on Jan. 28 was on the tarmac for 188 minutes before returning to the gate. The flight departed the gate a second time and was on the tarmac for 199 minutes before wheels-off. Details of the flight are listed as a three-hour Multiple Gate Departure and a three-hour Taxi-out. Table 12 of the DOT Air Travel Consumer Report lists number of flights with three-hour tarmac times and counts NW Flight 1491 as a single flight.
Explanation of Stage of Operation
Prior to Cancellation:
Flight left the gate but was cancelled at the origin airport.
Multiple Gate Departure: Flight left the gate, then returned and
then left again to resume normal operation.
Tarmac time is the time before the return to the gate.
Taxi-out: The time between gate departure and wheels-off
Taxi-in: The time between wheels-on and gate arrival
At Diversion Airport: The tarmac time at the alternate airport